EMI filter employing a capacitor and an inductor tank circuit having optimum component values

Patent metadata

Field	Value
Publication number	US-8977355-B2
Application number	US-70708410-A
Country	US
Kind code	B2
Filing date	Feb 17, 2010
Priority date	Apr 13, 2001
Publication date	Mar 10, 2015
Grant date	Mar 10, 2015

Abstract

A bandstop filter having optimum component values is provided for a lead of an active implantable medical device (AIMD). The bandstop filter includes a capacitor in parallel with an inductor. The parallel capacitor and inductor are placed in series with the implantable lead of the AIMD, wherein values of capacitance and inductance are selected such that the bandstop filter is resonant at a selected frequency. The Q of the inductor may be relatively maximized and the Q of the capacitor may be relatively minimized to reduce the overall Q of the bandstop filter to attenuate current flow through the implantable lead along a range of selected frequencies.

First claim

What is claimed is:

1. An implantable lead wire, comprising:
a) a length extending from a proximal lead wire end to a distal lead wire portion having a distal lead wire end, wherein the proximal lead wire end is electrically connectable to electronic circuits of an implantable medical device;
b) an electrode electrically connected to the distal lead wire portion or to the distal lead wire end, wherein the electrode is contactable to biological tissue; and
c) at least one bands…

Assignees

• Stevenson Robert A
• Dabney Warren S
• Johnson Robert Shawn
• Moschiano Holly Noelle
• Halperin Henry R
• Greatbatch Ltd

Inventors

• Stevenson Robert A
• Dabney Warren S
• Johnson Robert Shawn
• Moschiano Holly Noelle
• Halperin Henry R

Classifications

• H03H2001/0092

  Electricity · mapped topic

• G01R33/288

  Physics · mapped topic

• G01R33/285

  Physics · mapped topic

• A61N2001/086

  Human Necessities · mapped topic

• H03H2007/013

  Electricity · mapped topic